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Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced.
SOURCE: LG 50" plasma tv
call 877-543-8325 this is an LG Executive call center and they will fix this for free. I have a 50" plasma I bought january 2006 which is out of warranty by 5 months. They faxed me and the LG repair shop a 30 day warranty for my tv to cover the repair. Just tell them you heard a pop and in my case the picture is distorted. All they need is the model number and serial number and they should take care of it. No arguing needed.
SOURCE: sound works but no picture. black screen
I've had the same problem. Usually, if I turn the TV off and then back on again, it's fine.
SOURCE: I have a 50 inch plasma and the picture went black but I have sou
You should check the a/v cables, one of the yellow cables is probably broken if not you should get a new cable
SOURCE: tv has no picture but sound is ok
First of all, change the input device to something you know works for sure. Look for any jammed buttons on remote or on control panel. (This can happen, if you inadvertently sit on the remote hidden under a magazine or newspaper) Check the picture settings to ensure that these are ok. If problem persists, it might need attention by a qualified service technician.
SOURCE: My hisense 50 inch lcd tv has picture but no sound.
If you still have back light, then the T-con is probably defective. If you don't have back light, then you either have a bad power board/inverter or a defective panel
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